Brother HL-5440D Service Manual page 281

The number of drum rotations required for fuser unit warm-up operation (max.): 34.2.
Example: When fuser unit warm-up operation (max.) is performed before printing
Continuous pages printed
1 page
2 pages
18 pages
If both the warm-up operation after power ON or opening/closing cover and the fuser unit warm-
up operation (max.) are performed, the life of the drum unit becomes much shorter.
Note:
• The figures provided on this page are as of February 2012. These values are subject to
change without prior notice.
<How to reset drum counter>
LCD models
(1) Open the front cover while the machine is in the ready state. Press and hold the [Go]
button until "Drum Clear" is displayed on the LCD, and then release the [Go] button.
(2) Close the front cover. The drum counter is reset, and the machine returns to the ready
state.
LED models
(1) Open the front cover while the machine is in the ready state. Press the [Go] button for at
least four seconds until all LEDs light, and then release the [Go] button.
(2) Close the front cover. The drum counter is reset, and the machine returns to the ready
state.
Page count based on number of drum rotations (pages)
[34.2 + 12.2 + {3.8 x (1 - 1)}] / 15 = 3.1
[34.2 + 12.2 + {3.8 x (2 - 1)}] / 15 = 3.3
[34.2 + 12.2 + {3.8 x (18 - 1)}] / 15 = 7.4
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